Shield tunneling machine shell structure favorable for escape

Abstract

The invention provides a shield tunneling machine shell structure favorable for escape. The shield tunneling machine shell structure comprises a front shield shell and a rear shield shell, and the rear end of the front shield shell and the front end of the rear shield shell are axially and slidably sleeved and connected. The cross-section outline structures of the front shield shell and the rear shield shell are both of polygonal structures, edges and corners are formed on the outer surface of a shell, large and uneven gaps are formed between the shield tunneling machine shell and a cave wall,and therefore the shield tunneling machine is easy to escape. Through the effect of the edges and the corners of the polygons of the front shield shell and the rear shield shell, in the rotary drilling process of a shield tunneling machine rotary disc, a shield tunneling machine body has great resistance to ring torsion, and the stability of the shield tunneling machine is improved.

Description

Technical field [0001] The invention belongs to the technical field of shield machines, and in particular relates to a shield machine shell structure that is beneficial to escape difficulties. Background technique [0002] At present, the construction of hard rock tunnels with small diameter tunnels can be constructed with small shield machines, which not only solves the problems of traditional manual drilling and blasting methods such as harsh construction environment, slow construction speed, high construction cost, high risk, and high construction accident rate. Moreover, the automatic mechanization of hard rock tunnel excavation is realized, and work efficiency is improved. The shell structure of the small shield machine currently in use is generally a cylindrical structure. Because the surface of the cylindrical shell structure of the shield machine is round and smooth, it is easy to make the surface of the shell and the wall of the hole during the drilling process. Filled ...

AI Technical Summary

Problems solved by technology

The shell structure of the small shield machine currently in use is generally cylindrical. Due to the round and smooth surface of the shield machine with this cylindrical shell structure, it is easy to make the gap between the shell surface and the hole wall during the drilling process. It is filled with slag, and with the drilling movement of the shield machine, the slag between the shell and the wall will become more and more dense due to the rounded effect of the cylindrical shell structure without edges and corners, and finally the shield machine will It is firmly trapped, and the dense filling of the muck makes it very difficult for the shield machine to be released manually, resulting in the shield machine not working normally and greatly reducing the work efficiency

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